Here's how it works with a midi keyboard.

1. Select the keyboard in the midi input window. Since your keyboard does not have it's own driver like a newer controller does, the keyboard has to be plugged into the midi ports on your FA-66 which you have selected. I see you already have ASIO selected as your audio driver.

2. A keyboard only works using the Thru instrument which is on the far right of the other regular instruments.

3. You must match the midi channel between the Biab Thru and your keyboard. Go to Opt>Pref>Channels and in that window you'll see what midi channel Biab uses for all the instruments. The Thru channel is 5. Set your keyboard to transmit on midi channel 5.

4. You keyboard is just a controller it has no sounds of it's own. Hover your mouse over the Thru instrument and you see an option to select a midi instrument patch from whatever midi synth you're using. If you have Sampletank installed along with the Biab HQ instruments you can use one of those patches.

Once all this is set up you should be able to play your keyboard and hear the sound. When you do that you will probably hear a delay or latency. If it bothers you, come back and ask about that. Handling latency is another discussion.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.